What is the cheapest airline that flies from Chicago O'Hare Intl to Iasi?

Austrian Airlines is the most popular carrier operating from Chicago O'Hare Intl to Iasi

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Iasi Airport?

Prices for flights from Chicago O'Hare Intl Airport to Iasi Airport are updated daily.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Iasi Airport?

The number of operators available for flights from Chicago O'Hare Intl Airport to Iasi Airport is 1 as of October 2026.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Iasi Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Iasi Airport.

What documentation or ID do you need to fly to Iasi Airport?

The travel and health documents you'll need for your trip to Iasi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Iasi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$395 Cheap Flights from Chicago O'Hare Intl Airport to Iaşi in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to Iaşi

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:45 am - 1:25 pmORD Chicago O'Hare Intl-IAS Iasi

17h 40m2 stops Istanbul Bucharest Otopeni Intl

5:25 am - 10:00 amIAS Iasi-ORD Chicago O'Hare Intl

36h 35m2 stops Bucharest Otopeni Intl Istanbul

$734Multiple Airlines

Sat, Nov 28 - Sun, Dec 6

11:45 am - 8:20 pmORD Chicago O'Hare Intl-IAS Iasi

24h 35m2 stops Istanbul Bucharest Otopeni Intl

9:25 am - 6:10 pmIAS Iasi-ORD Chicago O'Hare Intl

40h 45m2 stops Bucharest Otopeni Intl Istanbul

$800Multiple Airlines

Thu, Mar 4 - Tue, Apr 6

9:50 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

33h 30m2 stops Munich Franz Josef Strauss Vienna Intl

4:05 pm - 1:10 pmIAS Iasi-ORD Chicago O'Hare Intl

29h 05m2 stops Vienna Intl Frankfurt am Main

$813Lufthansa

Wed, Dec 2 - Mon, Dec 21

9:50 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

33h 30m2 stops Munich Franz Josef Strauss Vienna Intl

4:05 pm - 8:05 pmIAS Iasi-ORD Chicago O'Hare Intl

36h 00m2 stops Vienna Intl Frankfurt am Main

$830Lufthansa

Wed, Dec 2 - Thu, Dec 24

9:50 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

33h 30m2 stops Munich Franz Josef Strauss Vienna Intl

4:05 pm - 1:10 pmIAS Iasi-ORD Chicago O'Hare Intl

29h 05m2 stops Vienna Intl Frankfurt am Main

$830Lufthansa

Wed, Dec 2 - Wed, Dec 23

1:30 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

17h 50m2 stops Washington, D.C. Dulles Intl Vienna Intl

1:30 pm - 1:20 pmIAS Iasi-ORD Chicago O'Hare Intl

31h 50m1 stop Vienna Intl

$851Austrian Airlines

Thu, Mar 4 - Tue, Apr 6

9:50 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

33h 30m2 stops Munich Franz Josef Strauss Vienna Intl

4:05 pm - 1:10 pmIAS Iasi-ORD Chicago O'Hare Intl

53h 05m2 stops Vienna Intl Frankfurt am Main

$862Lufthansa

Wed, Dec 2 - Sun, Dec 20

9:50 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

33h 30m2 stops Munich Franz Josef Strauss Vienna Intl

4:05 pm - 2:00 pmIAS Iasi-ORD Chicago O'Hare Intl

29h 55m1 stop Vienna Intl

$863Multiple Airlines

Wed, Dec 2 - Sun, Dec 20

4:20 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

15h 00m1 stop Vienna Intl

4:05 pm - 2:00 pmIAS Iasi-ORD Chicago O'Hare Intl

29h 55m1 stop Vienna Intl

$873Austrian Airlines

Sat, Nov 28 - Thu, Dec 17

4:20 pm - 3:20 pmORD Chicago O'Hare Intl-IAS Iasi

15h 00m1 stop Vienna Intl

4:05 pm - 2:00 pmIAS Iasi-ORD Chicago O'Hare Intl

29h 55m1 stop Vienna Intl

$873Austrian Airlines

Sat, Nov 28 - Thu, Dec 24

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Austrian Airlines flights from Chicago O'Hare Intl Airport to Iaşi

Our best Austrian Airlines deals on Chicago O'Hare Intl Airport to Iaşi flight tickets

Austrian Airlines

Mar 4

ORD1:30 pmChicago O'Hare Intl

17h 50m

2 stops

IAS3:20 pmIasi

Apr 6

IAS1:30 pmIasi

31h 50m

1 stop

ORD1:20 pmChicago O'Hare Intl

$851

Austrian Airlines

Nov 28

ORD4:20 pmChicago O'Hare Intl

15h 00m

1 stop

IAS3:20 pmIasi

Dec 17

IAS4:05 pmIasi

29h 55m

1 stop

ORD2:00 pmChicago O'Hare Intl

$873

Austrian Airlines

Dec 3

ORD1:30 pmChicago O'Hare Intl

17h 50m

2 stops

IAS3:20 pmIasi

Dec 17

IAS4:05 pmIasi

29h 55m

1 stop

ORD2:00 pmChicago O'Hare Intl

$877

Lufthansa flights from Chicago O'Hare Intl Airport to Iaşi

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Iaşi flight tickets

Lufthansa

Dec 2

ORD9:50 pmChicago O'Hare Intl

33h 30m

2 stops

IAS3:20 pmIasi

Dec 21

IAS4:05 pmIasi

29h 05m

2 stops

ORD1:10 pmChicago O'Hare Intl

$813

Lufthansa

Dec 2

ORD9:50 pmChicago O'Hare Intl

33h 30m

2 stops

IAS3:20 pmIasi

Dec 24

IAS4:05 pmIasi

36h 00m

2 stops

ORD8:05 pmChicago O'Hare Intl

$830

Lufthansa

Dec 2

ORD9:50 pmChicago O'Hare Intl

33h 30m

2 stops

IAS3:20 pmIasi

Dec 20

IAS4:05 pmIasi

53h 05m

2 stops

ORD1:10 pmChicago O'Hare Intl

$862

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Iaşi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Sat 11/28

11:45 am-1:25 pm

2 stops17h 40m

Iasi

Sun 12/6

5:25 am-10:00 am

2 stops36h 35m

$734

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Thu 3/4

11:45 am-8:20 pm

2 stops24h 35m

Iasi

Tue 4/6

9:25 am-6:10 pm

2 stops40h 45m

$800

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Wed 12/2

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Mon 12/21

4:05 pm-1:10 pm

2 stops29h 05m

$813

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Wed 12/2

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Thu 12/24

4:05 pm-8:05 pm

2 stops36h 00m

$830

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Wed 12/2

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Wed 12/23

4:05 pm-1:10 pm

2 stops29h 05m

$830

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Thu 3/4

1:30 pm-3:20 pm

2 stops17h 50m

Iasi

Tue 4/6

1:30 pm-1:20 pm

1 stop31h 50m

$851

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Wed 12/2

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Sun 12/20

4:05 pm-1:10 pm

2 stops53h 05m

$862

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Wed 12/2

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Sun 12/20

4:05 pm-2:00 pm

1 stop29h 55m

$863

Quickest round-trip

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Sat 11/28

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Thu 12/17

4:05 pm-2:00 pm

1 stop29h 55m

$873

ChicagoIaşi

ORD Chicago O'Hare Intl - IAS Iasi

ORDIAS

Chicago O'Hare Intl

Sat 11/28

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Thu 12/24

4:05 pm-2:00 pm

1 stop29h 55m

$873

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Iaşi

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Chicago O'Hare Intl Airport to Iaşi flights?

You could potentially save up to 42% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Iaşi flight.

When to book flights from Chicago O'Hare Intl Airport to Iaşi

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Iaşi according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Iaşi (ORD to IAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Iaşi

Best Price Found	$395
Fastest flight time	17h 40m
Direct flights	None

The best one-way flight to Iaşi from Chicago O'Hare Intl Airport in the past 72 hours is $395. The best round-trip flight deal from Chicago O'Hare Intl Airport to Iaşi found on momondo in the last 72 hours is $734.

The fastest flight from Chicago O'Hare Intl Airport to Iaşi takes 17h 40m

There are no direct flights from Chicago O'Hare Intl Airport to Iaşi. There are no popular flight routes from Chicago O'Hare Intl Airport to Iaşi.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Iaşi

How far is Chicago O'Hare Intl to Iasi by plane?
The distance between Chicago O'Hare Intl and Iasi is about 5120.7 mi. Flights usually cover this in 17h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Iasi Airport?
Prices for flights from Chicago O'Hare Intl Airport to Iasi Airport are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Iasi Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to Iasi Airport is 1 as of October 2026.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Iasi Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Iasi Airport.
What documentation or ID do you need to fly to Iasi Airport?
The travel and health documents you'll need for your trip to Iasi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Iasi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Chicago O'Hare Intl Airport to Iaşi?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to Iaşi is Austrian Airlines, representing 100% of all bookings.

Best airlines flying from Chicago O'Hare Intl Airport to Iaşi

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Iaşi with momondo

Airline	Rating	Free Cancellation	Price
Austrian Airlines	PriceFrom $608	Free Cancellation	Rating 7.5 984 reviews		Search Austrian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Iaşi?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Iaşi. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to Iaşi with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Iaşi flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Iaşi?

momondo provides multiple filters to help you find the best flight to Iaşi from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Iaşi right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Iaşi from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.